Porta Lingua is indexed and archived in the following databases:

MTAK REAL: https://real-j.mtak.hu/view/journal/Porta_Lingua.html

Dimensions: https://app.dimensions.ai/discover/publication?or_facet_source_title=jour.1405624

Crossref DOI:  https://search.crossref.org/?from_ui=yes&q=porta%20lingua

MTMT: https://www.mtmt.hu/folyoirat/10013521